That he is.
Ukrainian strategy could work if they consolidate their forces into urban areas as well as targeting supplies of the Russian forces as well as use successful tactics like mines and IEDs. But the problem is their Ukrainian president who didn't take the possible invasion seriously and didn't order a mobilization in the first place until long after the invasion which means many fighting men are in civilian clothes and don't have weapons and are out of position while the invasion is going on. So it all comes down to him if he still wants to fight after all the blunders. The Ukrainian forces are fighting hard, but you don't want to see their own President giving up. It be like the American colonists seeing General Washington looking hopeless and wants to give up to the British.